Well, I really don't know. I'm still reading up/into concentricity honestly. I see the tips in die straightening and I was curious if anyone had measured their stuff, used the tips to straighten things out, remeasured and shot groups with each. One reason I wanted to try one is for consistency. I know everyone has their off days but how a load can go under 1/2" and then in the same brass on a day that I am shooting good be over 1" is beyond me. Maybe it's just gremlins in the barrel?
